Two-cycle motor



E. c. PANNING AND F. A. ISERN.

TWO-CYCLE MOTOR.

APPLICATION FILED MAYZO, I919,

1,3 2,539, I Patented June 1921.

2 SHEETS- T1.

/ EGPQIZ/Zinf, 4 Z2 Z5 17% Bern.

i fifty,

I L5 H1 7 f E. c. PANNING AND F. A. ISERN TWO-CYCLE MOTOR.

APPLICATION FILED MAY 20, 1919.

1,382,539. PatntedJuneZL-IQZL 2 SHEETS-SHEET 2.

charge chamber communicating with the UNITED STATES,

PATENT; OFFICE.

EDWARD C. PANNING AND FERDINAND A. ISERN, OF ELLINWOOD, KANSAS.

rwo-cYcLE MOTOR.

I Application filed May 20,

provements in Two-Cycle Motors; and we.

do hereby "declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 2

Our invention relates to improvements in internal combustion engines of the two-cycle t e.

An important object of this invention is to provide a two-cycle motor having a combustion chamber and adapted for supplying fresh char es of gas immediately upon the exit of t e spent gases from, the explosion chamber.

A further object is to provide a two-cycle motor wherein the gases are fed directly into the combustion chamber thereby eliminating the passage of the gases through the crank case.

A further object is to provide a two-cycle motor which operates with a high degree of efiiciencywith a low grade fuel.

A further object is to provide, a..tw0-cycle engine which by reason of the charged chamber operating 1n conjunction with the combustion chamber will operate under a high compression. 4

A further object is to provide amotor of the character described which is but few in parts of highly simplified construction and reliable in use.

A further object is to provide awmotor of the character described especially adapted for use on tractors, trucks and other apparatus requiring a heavy duty motor.

A further object is to provide a two-cycle motor having means for closing the exhaust port of the working cylinder prior to the complete compression vof the charge in the compression cylinder.

Other objects and advantages will be apparent during the course of the following description. I

In the accompanying drawings forming a part of this application and in which like Specification of Letters Patent. Patentd J 21 1921 1919. Serial No. 298,379.

Figure 1 is a section through a portion of a motor embodied in the invention,

Fig. 2 1s a horizontal section taken on l1ne 2- 2 of Fig. 1,

Fig. 3 is a section through 'themotor showing the power piston on the completion of a compression stroke,

Fig. 4 is a horizontal section taken on line 44 of Fig. 3,

Fig. 5 is a section on the line 5-5 of F1 1g. 6 is a transverse section through the crank shaft, and

Fig. 7 is a fragmentary section through the motor, showing one of the valves arranged vertically.

In the drawings wherein for the purpose of lllustration is shown the preferred embodiment of the invention, the numeral 10 designates the combustion cylinder of the motor provided with an exhaust port 11 in one side. A piston 12 is mounted in the cylinder and is connected with a crank shaft -13 by a connecting rod 14.

Cooperating with the explosion or comand which for the purpose of this description will be designated a charge piston. The charge piston is also connected to the crank shaft b a connectin rod 17. a As i1 ustr'ate'd in ig. 2,the-charge chamber A is in communication with the combustion chamber B by a transverse passage 18. '(llhe upper portions of the chambers A an ing openings 19 and 20 respectively opening out through opposite sides of the motor.

The openings 19 and 20 are screw threaded for en agement with valves generally designate by the numeral 21. The valves 21 are of the check valve type and include an exteriorly screw threaded base member 22 having a polygonal head 23 on its outer side for being engaged by a suitable wrench to remove the valve. As illustrated in Figs. 2 and 4, the valves may be readily removed for cleaning and removing the carbon from the cylinders. A hollow stem 23 is formed integral with the base 22 and'has its inner portion in threaded engagement with'a valve seat 24. A valve 25 is mounted in the seat 24 and is provided with a stem 26 extending through guiding elements 27. A

B are provided with laterally extendport 11.

gases from the chamber B the new gases pass.

,sage of the gases.

coil spring 28 is arranged on the valve stem and is interposed between one of the guiding elements and a'pin 29 carried by the stem. The coil spring 28 serves to normally retain the valve head. 25 seated. The valve arranged in the top of each of the c linders is s hounded by a supporting .wal 30 open a its inner end to permit of the free pass illustrated in Fig. 2, the valve in the top of the charge cylinder 15 controls communication between the char e cylinder and a fuel supply passage 31. uring the downward movement of t e charge piston 16, the valve withi n the charge cylinder. A is drawn inwardly thereby permitting of the passage of gases into the charged cylinder throughapertures 32 in the valve sleeve. On upward movement the charge piston 16 forces the gas vapor through the passage 18 into the combustion r 12. The charge enters the combustion chamber B through the valve inthe top of the combustion chamber.' During the upward movement of thecharge piston 16 the power piston 12 is on its power stroke and upon reaching its lowermost position the spent ases are expelled through the pen the passage of the spent in from the chamber 'A. Subsequently the power piston 12 starts on its compression stroke, upwardly while the charge piston 16 At thetime the starts on its intake stroke thereby. preparing a .new charge for the combustion chamber ,B.

As illustrated in Fig. 1, the charge piston is retardedslightly .to permit the-working cylinder to close the exhaust port before t e chargepiston reaches upper dead center. gas in the charge cylinder compressed the exhaust port is most highl the unignited gases thereby is closed an prevented from escaping. The retarding of I the diameter of the work 'the charge cylinder is accomplished by ofi- ,'setting the throw of the cran I shafthaving connection with the piston rod 17. v

In the form ofour invention shown in Fig. 7, we have'dis'posed the valve in the working cylinder vertically whereby; th 3 0 the ng cylinder m y By having the valve'disposed vertically, 'ng cylinder may be made much smaller, owing-to the fact that said valve will not occupy as much space as when disposed horizontally. V

The ignition may be from a magneto, bat tery or by high compression. When asparking system is employed a-spark plug,33 is provided for the com ustion chamber B at'a point adjacent the 'i'nletvalve.

In the'practice of our invention the inventive idea may be carried out either in a motor of the vertical, horizontal or horizontal opposed type. Any desired number of explosive cylindersmay be employed,

employed exclusively for supplying air to the combustion chamber while a separate "fuel pump supplies liquid fuel to the com- I When it is desired to'ignite the compressed ases by com ressi'on, the charge chamber 5 is increase insize with relation to the combustion chamber B, thereby forcing agreater and more highly compressed charge into the combustion chamber.

' 'While we have shown the preferred embodiment of our invention, it is understood that such minor changes in arrangement and construction of parts may be made as will remain within the spirit of the invention and the scope'of the-ap ended claims.

Having thus descri edour invention, what we claim is 1. A two-cycle motor comprising a block having combustion and charge forming cylbustion chamber.

inders, a head for said cylinders having com forming chambers, one

' bustion and charge of the ends of said'chambers communicating with the combustion and charge forming cylinders respectivel and their other ends 7 o ening outwardly t rough the head, bases t readed in said chambers closing the last said bases for controlling the passa e of fuel through the chambers, municating with each other betw en the valves, said charge formin chamber having an intake port, and wor in and charge forming pistons in the com ustion and charge forming cylinders respectively.

NA two-cycle motor comprising a block having combustion and charge"fo'rming cylinders, combustion and charge forming chambers therein, one of the ends'of said chambers communicating with the combustion and named ends thereof, check valves carried by said chain c s comadapted formed on the valves and slidable in the} shanks, tension means in said shanks forthe stems, said chambers communicating with each other between the. valves, saidcharge v forming chamber having an intake port, and working and char e forming pistons in the combustion and i re ectively.

c arge forming cylindersntestimony whereof we aflix our signa I tures in presence of two witnesses.

EDWARD C.- PANNING.

FERDINAND A; ISERN.

Witnesses: v f I WINNIE Bocxnmonna,

* NELLII Hl mrna. V 

